51单片机数码管倒计时程序,从999999开始倒计时,用定时器T1的中断完成...答:include<reg51.h> define uchar unsigned char uchar code ledtab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};//0-9 uchar sec=0,min=0,hour;uchar time;uchar disdat[6];void delay(unsigned int x){ unsigned int i,j;for(i=0;i<x;i++)for(j=0;j<...
求两位数码管显示一个倒数时间的单片机程序,比如显示从99到0答://两位数码管显示倒计数99~00,51单片机。include<reg52.h> // 倒计数 define uint unsigned int define uchar unsigned char uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};uchar bai,shi;uint a1,a2;sbit D1=P3^...
51单片机接2个led数码管,怎么让数码管倒计时?答:先看看下面程序,看懂了,就知道咋编了 include<reg52.h> define uchar unsigned char define uint unsigned int uchar a , b=0;sbit wei1=P1.0;sbit wei2=P1.1;//共阴数码管七段码 uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,0x7f,0x6f,0x77};void ...
怎样用51单片机实现累加计时和倒计时,并用六个共阴极数码管显示出来。用...答:include<reg51.h>unsigned char ledtab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xff};unsigned char sec,min,hour,scanled;unsigned char key,mode,time; unsigned char disdat[6];bit upbit;sbit keyu=P3^0;sbit keyd=P3^1;...